Is it safe to compile multiple ports at the same time ?

[Robert Huff]

Sergey Matveychuk writes:

>  I've not once run two or more portupgrade -R and go away and when
>  back found both failed because of they started build the same
>  port.

	That is a definite lose.
	It is also my understanding having N>1 updates of pkgdb at the
same time will break things.


				Robert Huff